Hi, Having just joined Gary's campaign, I am checking that my results are comparable with other contributors. My V,R data look fine but my CR (CCD unfiltered...
Robin, I reduce my unfiltered images using BAA chart V values. I see there is a recent CCD unfiltered obs at 14.5 whereas a couple of other observers are...
... No one asked me to do a calibration for OJ287. :-) I can add it to my program if desired. Richard gives you some good ideas. Remember also that not all...
Hi Robin, Because the CCD I have used so far has a response nearer to V than R I've used the V values when reducing my observations. I note these values have a...
Thanks Richard and everyone, I believe the discrepancy is now easily explained. My unfiltered figure is CR ie reduced using comp star R values in line with...
Hello Robin Do you still use a VESTA SC3 B+W QUICKCAM with the VC200L ? What kind of CCD chip does it use ? At which lambda does it have its max QE ? How good...
Hello Wolfgang, Yes it is still the SC3. I also now have Johnson V and R filters. Now I have good precision, I am going for good accuracy! The CCD is a sony...
Hello Robin You have a typo in the email. The max QE of the ICX424AL (also used in the SXV-H5) is not at 550 nm, but at 500 nm. So its for sure best to use V...
Thanks Wolfgang. I used an ensemble from the reference you quoted for my measurements. The combined B-V = 0.7 and V-R = 0.4 I am certainly not claiming that CR...
Michel, Is'nt this the star Nova Monoceros 1939? I had a look at Burnham's Celestial Handbook, this is classed as an (NA) type nova, catologued as magnitude...
Darren Baskill, Leicester University, advises that the XMM_Newton observations of this object have been scheduled as follows:- Start 2006-03-04@16:32:04 End...
Hello Robin, Thanks for sharing your data. In the 2005 March outburst of Bernhard 01, Gary Poyner and I (and others) found large, rapid irregular variations:...
Hello Jeremy, I have just been reading the paper on the March 2005 outburst, which was recently added in the cvnet-discussion files. The variations I see in...
... Graph of 14 min worth of individual frame values added. http://mysite.wanadoo-members.co.uk/astro2/Photometry_1RXS.htm The SNR is too poor to be sure of...
Only just got around to analysing my obs from 9-10 Feb. I was able to observe for a short while just after sunset but then had to go out. I recommenced upon...
Looks like it is fading from a normal outburst. RXSJ053234 060212.0944 15.17V SXN err +/-0.05 Instruments: 30.5cm f/10 SC, ST-6, V filter Cheers, Mike...
Dear observers, enclosed observations made of outburst of RS Oph. Jose Ripero (OJR/Rip) M 1 Group/MADRID (SPAIN) High clouds. Low altitude. Strong Moonlight ...
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